Bucket dumping mechanism for dump type scoops



May 20, 1952 M. c. WILLS ET AL BUCKET DUMPING MECHANISM FOR DUMP TYPE SCOOPS Filed July 19, 1947 3 Sheets-Sheet l INVENTORS, liar/a7 6. y flay/Ia .Z [VI/Zr.

A WWI/cf].

y 0, 1952 M. c. WILLS El AL 2,597,692

7 BUCKET PUMPING MECHANISM FOR DUMP TYPE SCOOPS Filed July 19, 1947 3 Sheets-Sheet" 2 INVENTQRJ, Waive/r (Z XVI/7f, BY [lay/7a J M/Y/Is.

M y 20,1952 M. c. WILLS- ET AL 2,597,692

BUCKET DUMPING MECHANISM FOR DUMP TYPE scoops Filed Jul 19, 1947' s Shets-Sheet s "x Q I21 Patented May 20, 1952 BUCKET DUMPING MECHANISM FOR DUMP TYPE SCOOPS- Marlon 0. Wills and Wayne J.

Topeka, Kans.

Wills,

' Application July 19, 1947, Serial No. 762,032

3 Claims. 1

This invention relates to improvements in scraper attachments for tractors, and has particular reference to a scraper of the back dump type.

The principal object of the present invention is the provision of a scraper attachment adapted to be attached directly to the rear axle of the tractor.

Another object of the invention is the provision of a scraper attachment for a tractor adapted to beoperated by the hydraulic power system of the tractor to raise and lower the loaded scraper for carrying and dumping.

A further object is the provision of a scraper attachment for a tractor that is closely hitched to the back axle of the tractor and conveniently operable by the operator positioned on the tractor seat.

Other objects are simplicity and ruggedness of construction, ease of attachment, and ease and efiiciency of operation.

With these objects in view, as well as other objects which will appear during the course of the specification, reference will now be had to the drawings wherein Figure 1 is a side elevational view of a scraper attached to a tractor, shown in the raised carrying position and embodying this invention.

Fig. 2 is a side elevational view substantially as shown in Figure 1, with the scraper in the lowered position.

Fig. 3 is a plan view of the scraper as shown in Figure 2, with some of the tractor parts deleted.

Fig. 4 is a perspective view of the connecting members detached from the tractor and in the emptying position.

' Fig. 5 is an enlarged sectional view through the scraper showing it in the dumping position.

Fig. 6 is a detached plan view of the H-frame.

Throughout the several views like reference characters refer to similar parts and the numeral l0 designates any of typical farm tractors having a rear axle housing 2 and being provided with suitable hydraulic power system, not shown.

That portion of the structure, best shown in Figure 1, discloses the attachment which is adapted to be attached to the tractor axle housing [2 and braced to the tractor frame I4 by means of rods l6. v

Standards l8 and 20 offset intermediate their ends at 22 and provided with a bracket 24 spaced above offset 22 serveto form a recess 2! to receive axle housing 12 therebetween (see Figure l). A bolt 26 extending through bracket Hand into offset 22 is adapted 'to clampingly fasten the standards to axle housing l2. By removing bolts 29 which secure the rods l6 to the upper ends of standards 18 and 20 and the screws 28 which secure the forward ends of tie rods [6 to the tractor frame l4, the entire scraper attachment structure may be removed from the tractor. It will benoted that rear end of tie rods l6 are respectively attached to the upper ends of the standards by bolts 29, thus presenting means for preventing rearwardly sagging of the standards when a load is applied.

An H-frame 30 having side arms 32 and 34 and an intermediate cross member 36 is pivoted at its front extremities by bolt 38 to standards l8 and 20 below axle frame l2, and at its rear end to opposite ends of a scraper frame 40 by means of bolts 42. Cross member 36 is provided adjacent its opposite sides with a pair of spaced apart upwardly projecting ears 44 to which is pivotally mounted at 46 spaced apart bars 48 which are disposed in substantially parallel relation to standards l8 and 20 respectively and are pivotally joined to the upper ends of the respective standards by links 50 which are positioned substantially parallel with 32 and 34. Pin 5| connects links 50 with bars 48 and the forward ends of the links are pivoted to standards I8 and 20 respectively by bolts 53. Scraper frame 40 comprises a sheet of metal formed and bent to present ends 52 and a rear wall 54 with a cut-away lower portion whereby the vertical width of wall 54 is less than that of the end members. The upper edge of wall 54 is reenforced by means of an angle iron 56 to which is attached a plurality of upwardly extended bearings 58 in which is rotatably mounted a horizontally disposed shaft 60 which extends substantially the full length of the scraper. Shaft 60 is interconnected with the bars 48 by spaced apart links 62 which are pivoted at their respective outer ends to shaft 60 at 64 and at their inner ends to adjacent bars 48 bypins 66.

Links .62 are'disposed in parallel relation adjacent opposite ends of the scraper frame. A series of holes 68 pass through each of bars 48 to receive pins 66 whereby the tilting of the scraper frame may be adjusted for reasons hereinafter set forth, also, each link 62 is provided with a plurality of holes .10 for varying the effective length of links 62'.

' Pivotally mounted along the lower edge of rear wall 54 by means of hinges i2 is a gat 14 which is adapted to be moved to abut against the forjwardly. and downwardly inclined edges 76 of scraper ends 52, to form an inclined bottom por- The gate 14 is provided at each of its opposite end with forwardly projecting tongue 82 which overlaps and is slightly spaced apart from the outer face of the adjacent end 52 of the scraper. Connecting link 84 disposed on the outside of end plate 52 is pivoted to tongue 82 at 86. Theup per end of link 84 extends above end plate 52 and is pivoted at B8 to the upper extremity of the bottom end plate 80. This positioning of they gate I4 and the bottom member I8 by means of links 84 is such thatwhen thebottom plate 14 is dis- 'sosed' n a horizontal position, assho'wn in Fi ure 1, the gate I4 will be secured tightly against the inclined edge I6 of end pl'ate 52, thereby completelyjclosirig the scraper for loadingfand for t ansportingia Ioadto'aidesired position for dump- This link eonn'ec'tion between the parts is so arranged 'that when'the bottom member is pivoted to the clumping position, as clearly shown in Figure,5,fthe,g'ate 14 will be 'moved rearwardly to "a position substantially parallel with the bottom member 18, thus insuring a complete opening of the parts whereby the load may be readily HEac'hof thee'r'id plates '80 is provided with operating means including a lever arm 90 rigidly attached. vto shaft 6'0, the upper vend. of said arm being pivotallyconnected' by a pin 92 to link 94- whieh 'is pivetany "connected at its other end by m'earisjofjpivot"08-to the upper extremity of end ateau, The re ative lengths of lever arm 90 and li'nk '94i are so jproportio'ned that when in substantially straight alignment they will maintain the gate and bottomsections in fixed closed position.

Referring to igure 1, which shows the scraper "in thejclQ edfposition, it will'be noted that the ev r arm 9 0 and'thelink 94 are disposed in slightlyioifsetfrel'ation and that a stop member 95 which is rig'idlyvatta'ched to am an is in position to r'est onthfettopjoffend[plate 52 to prevent further downward breaking 'ofjthe joint between the armf9 0 and link 04, thussecuring the parts in the closed position against the load being carried.

Itisjquite apparent that the load may be dumped b'y'siniplfy rotating shaft 60 in the reverse direction tofbre ak the joint between arm 90 and iin'k 94, upwardly so thatthe load in the scraper will exerta downward pressure, thus causinga q ko n o thei i e Means for controlling the load comprise a lever arm 96 rigidly secured to shaft 60 and interconnected by rod 98 to'a lever I00 which is pivoted intermediate itsends at I02 to standard I8, Ti'liSlYGl: fI00 "is "s'o'po'sitioned as to be in convenient positionto'be operated by the operator located on the seat of the tractor I0.

Means for raising and lowering the scraper comprisesa-pair of hydraulic jacks I04, one being disposed in each sideof the scraper structure, as shown in Figures 1,2, i3 iand 4. This jack comprises a cylinder I06 'havingja basefl0 8 pivoted between ears II'0 integral with standards Hand respectively'by'meansof pivot I I2. A piston 4 H4 is slidably mounted in cylinder I06 and is provided with a piston rod IIB which is secured to its upper end by pin 5I to the upper extremity of bars 48.

It will be noted that the jack is diagonally positioned between the parts so that when fluid pressure is delivered through tube I05 to cylinder I06 against piston I I4, thescrap er will be raised, and

.then by releasing the pressure in the cylinder the Weight of the scraper will cause it to be lowered to a position against the ground for loading.

4 tsbestshownjn higures 3 and 5, it will be noted that the hinged bottom member I8 is provided at its forward edge with a straight blade I I8 which is removablyseeured thereto by means of bolts I20. In order to present the blade at the proper angle to the earth being loaded, the link 62 may be adjusted for varying the tilt of the bottom Ofthemember I8 to the ground surface.

When the scraper bucket is closed after it has deposited a load to the rear thereof, it may be lowered and se asfaQbulldozer by simply backing the traetor to pushsaid dump loadto any desired position. When using it as'a bulldQ er the bucketmaybe raised to any desired, height by mean otjtn' power takeeofr'means. This use of the device may e utilized for filling ditches where during the digging operation the am has been deposited adjacent theditch.

it is 'quiteafiDaint hat 'byfattachirig the scraper unit directly. tojth'e rear axle of the tractor, the structure extr emely'rigid andstable, and can be easily operated bythe tractor driver located on the seat adjacent the tractor control parts. v

What maimasnew andd'esire to protect by Letters Patent is; I M e 1. In combination "with a powered Vehicle having an axle housingand apower take-Off, a pair of vertically; dis'fp'osed standards 'detachably secured to said aide ridusingg'a rrame secu ed for pivotal movement at its forward ends to the lower extremitiesfo'f said standards, a. "Seraper bucket pivoted tofthe;rear ends or saia frame, means carried by said standards and "actuated bysaid .power, take-oi to raise said scraper bucket above "the ground surface, said 's'c'raper bucket having 'a hinged rear gate and a "pivoted bottom member, and fa toggle linkage interconnecting'said igat'e fa'nd bottom member, whereby they are simultaneously operatedt openfand a ome. e ten e toggle i ka' having adeadfcentelr position at which said gate and bottom member "are secured in the closed position. y p I,

2. In combination'with a poweredvehicle havmg fii l 93 and M ye t keo a a of r i all disp s d sta d rd e eeh bl s e reetq said. a e ho in a' ram p e f Pivot imeremen e 1% o wa the lower extremities of said standards, a scraper bucket pivotedto "the rear ends of said"fram e, meanscarried by said standards and actuated by said power take-offtoraise said scraper bucket above the ground surface, said scraper bucket having a hinged rear-gate and apivoted bottom member, means interconnecting said gate and bottom member, whereby they are simultaneously operated to open and close "said scraper bucket, and means carried by said biieket and operable as said bucket is closed :to fno'rrnally secure 's'aid rear'gate the bottom member in the closed position. r

' s. In combination witha'powered vehicle having an axle housing and a power take-off, a pair of vertically disposed standards detachably secured to said axle housing, a frame secured for pivotal movement at its forward ends to the lower extremities of said standards, a scraper bucket pivoted to the rear ends of said frame, means carried by said standards and actuated by said power take-off to raise said scraper bucket above the ground surface, said scraper bucket having a hinged rear gate and a pivoted bottom member, means interconnecting said gate and bottom member, whereby they are simultaneously operated to open and close said scraper bucket, means carried by said bucket and operable as said bucket is closed to normally secure said rear gate and bottom member in the closed position, and manually operable means to release said securing means whereby said bucket will be caused to open by gravity.

MARION C'. WILLS. WAYNE J. WILLS.

6 REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,958,195 Le Bleu May 8, 1934 2,110,186 Weimer Mar. 8, 1938 2,328,715 Drott Sept. 7, 1943 2,329,241 Berney Sept. 14, 1943 2,341,179 Hippie Feb. 8, 1944 2,364,121 Arps Dec. 5, 1944 2,368,156 Orelind et a1. Jan. 30, 1945 2,454,475 Owen Nov. 23, 1948 2,496,874 Holopainen Feb. '7, 1950 

